测控技术与仪器专业英语 张凤登UNIT-6.Amplifiers
9页1、UNIT 6 Amplifiers,6.1 Text Distinction between Voltage and Current Amplifiers 电压放大器与电流放大器的区别,Table 6-1 Source and load resistance considerations in voltage and current amplifiers, rin: the input resistance of an amplifier. rout: the output resistance of an amplifier.,New Words distinction n. 区别;差别 stage n. (放大)级 substantially ad. essentially, 基本地;实质上 overall a. 总的;综合的 decibel n. 分贝 deduce v. reach a conclusion, 推论 precaution n. measure, 预防措施 distortion n. 失真 inherently ad. 本质上,生来 shunt v. 使并联,Ex
2、ercises 1. Answer the following questions. The input resistance of the amplifier must be high compared with the resistance of the signal source. The output resistance must be low compared with load resistance. The overall voltage gain of the amplifier can be given. Yes, there is. When expressed in decibels, it can be added to give the overall gain of the amplifier. The input resistance of the amplifier must be small compared with the resistance of the signal source. The output resistance of the
3、amplifier must be high compared with the load resistance. The overall current gain of the amplifier can be given. Yes, there is. When expressed in decibels, it can be added to give the overall gain of the amplifier. A given amplifier can behave as a voltage or current amplifier. The advantage of using FET as voltage amplifier is that the transistor has a high input resistance and works with little power.,Exercises (continue) 2. Choose the right words or phrases and change them into appropriate f
4、orms if necessary to replace the underlined parts in the following. reaches a conclusion essentially is composed of developed In fact adjusted rests on In spite of powered be put into use in,6.2 Reading and Translation Amplifying System Functions 放大系统的功能,New Words and Phrases regardless of 不注意,不顾 stereophonic ,stiufnik a. 立体声的(stereo) cartridge k:trid n. (唱片)拾音器,卡盘 amplitude mplitju:d n. magnitude, 幅度 deck dek n. (录音机)走带机构 RF abbr. radio frequency, 射频 RF voltage signals 射频电压信号,斜体部分参考译文: Micropho
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